Yang Nian, who lost his memory, returned to the ninja world with his sister in order to find his memory.
In the world of ninjas, the Sullun clan, which had disappeared for many years, reappeared and fought against the ninjas again and again.
Dimensional fusion gradually connects all parallel universes into a whole, and dangers follow.
Yang Nian's missing sister was also transformed into a weapon GA-2 by the Surun people, and the ninjas fought against it.
